FIG 3. Bar graph of the signal intensity ratios on T2-weighted images. At 2 hours, the ratios in type 1 and type 2 lesions increase significantly in both groups (P < .001). The ratios of type 1 lesions are significantly higher in group 2 compared with group 1 at both 30 minutes and 2 hours (P = .013). However, in type 2 lesions, the ratios do not significantly differ in either group at either time (P > .643).